90495-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90495-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,9 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90495-21:
(7*9)+(6*0)+(5*4)+(4*9)+(3*5)+(2*2)+(1*1)=139
139 % 10 = 9
So 90495-21-9 is a valid CAS Registry Number.
90495-21-9Relevant academic research and scientific papers
Alkylidenecyanamidium Salts. α-Bromination of Carbodiimides
Joachims, Johannes C.,Rahman, Mohammed Abdur
, p. 502 - 516 (2007/10/02)
Carbodiimides (15) of type H-C-N=C=N-R react with N-bromosuccinimide (NBS) to afford unstable alkylidenecyanamidium bromides (18) which undergo von Braun elimination of R-Br giving the alkylidenecyanamides 19 if R is a tertiary alkyl group.Reaction of car